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NDT.net Issue - 2017-03 - NEWS

Sonotron NDT provides the PA UT based solution for the rapid detection of the fatigue cracks in the actuators of the leading edge flaps

Sonotron NDT60, Rehovot [Israel]
NDT.net Journal
Issue: 2017-03
The wings of the modern aircraft are equipped with the leading edge flaps, which are advanced during takeoff and landing for increasing the lift. The compound differential planetary gearing is used in the leading edge flaps mechanics when it is necessary to provide high-torque low-speed power transmission connecting the flap surface to the spar. It was realized that the fatigue cracks may occur in the certain areas of the ring gear in between the teeth propagating towards the OD surface. In order to prevent the accident such cracks should be detected at the earliest possible stage.


The while-on-wing rapid detection of the small cracks of the ring gear is now possible with use of the PA modality based technology from Sonotron NDT.  

The inspection is illustrated by the video below: whilst scanning with the small PA probe circumferentially over the OD surface of the ring gear the direct reflection echoes received from the teeth appear one-by-one on the True-To-Geometry sectorial scan image. The tip-diffraction echoes from the cracks are easy distinguishable appearing is the separately designated region of interest.

The inspection may be implemented with the use of Sonotron NDT’s ISONIC 3510, ISONIC 2010, ISONIC 2009 portable ultrasonic flaw detectors.

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Sonotron NDT

More of Sonotron NDT published in NDT.net
2018-09-01: MULTIGROUP T – the new inspection modality combining live S-Scan and FMC/TFM coverage out of the same PA Probe
2018-08-01: Complete PAUT Solution for the In-Service Inspection of Annular Ring Plates in the Above Ground Storage Tanks
2018-07-01: Sonotron NDT Brings the Annual Verification (Calibration) of PAUT Instruments to the Overnight Automatic Procedure at the Premises of the Instrument Owners
2018-06-01: PAUT: Rapid Detection and Evaluation of the Fatigue Cracks in the Web-to-Outboard End Pad Fillet Radius at Lower Wing Attach of an Aircraft
2018-05-01: Automatic finding, sizing, and alarming of the defects upon PAUT scanning completed
2018-05-01: Sonotron NDT introduces the upgraded version of ISONIC PA AUT platform
2018-04-01: Sonotron NDT expands the applications portfolio for PAUT of welds
2018-03-01: Frequency Domain Signal Analysis and Data Presentation – the Next Step Forward in the PA UT Instrumentation
2018-02-01: Sudden Problem in the Above Ground Storage Tank and the Overnight-Found PAUT Solution
2018-01-01: Sonotron NDT announces the new release of the ISONIC EXPERT FFC SW application: PA ultrasonic inspection and evaluation of Flange Face Corrosion
All 60 Articles & News of Sonotron NDT in NDT.net

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